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Seismic response of self‐centering precast concrete frames with hysteretic dampers

机译：带有滞回阻尼器的自定心预制混凝土框架的地震响应

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摘要

With the rapid development of cities and the invasion of major natural disasters such as earthquakes, the resilience city as a new design concept has been paid more and more attention. As an important branch of self-centering seismic resisting system, self-centering concrete frame system has been studied by many scholars. These studies prove that self-centering concrete frame structure has excellent self-centering ability but poor energy dissipation capacity. Adhering to the working principle of self-centering structure and considering the development concepts of building industrialization and modularization, this paper proposed a kind of self-centering precast concrete frame with hysteretic damper (SCPCHD). In order to verify its energy dissipation capacity and seismic performance, elaborate finite element models were established and elastoplastic dynamic time history analyses were carried out. The results showed that the SCPCHD frame has a similar interstory displacement response to the reinforced concrete (RC) frame and the energy dissipation performance of its joint is obviously superior to the RC frame under rare earthquake because the SCPCHD frame has low damage characteristics and excellent damping device. In summary, this paper proves the feasibility and superiority of the SCPCHD frame, providing reliable support for further research.
机译：随着城市的快速发展和地震等重大自然灾害的入侵，作为新设计理念的抗灾城市受到了越来越多的关注。自定心混凝土框架系统作为自定心抗震系统的重要分支，已经受到许多学者的研究。这些研究证明，自定心混凝土框架结构具有良好的自定心能力，但耗能能力差。秉承自定心结构的工作原理，结合建筑工业化和模块化的发展思路，提出了一种带有滞回阻尼器的自定心预制混凝土框架。为了验证其能量消散能力和抗震性能，建立了精细的有限元模型并进行了弹塑性动态时程分析。结果表明，SCPCHD框架的层间位移响应与钢筋混凝土（RC）框架相似，并且在罕见地震下其接头的能量耗散性能明显优于RC框架，因为SCPCHD框架具有低损伤特性和出色的阻尼性设备。综上所述，本文证明了SCPCHD框架的可行性和优越性，为进一步的研究提供了可靠的支持。

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